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Description

This error indicates that the SAP S/4HANA system failed to apply a set of incremental changes (delta logs) to a database or replicated system. It typically occurs during data synchronization, replication, or recovery processes, leading to data inconsistency if not resolved.

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Error Message

ERR_CS_DELTA_LOG_REPLAY_FAILED

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Known Causes

4 known causes

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Data Corruption

The delta log files or the target data store might be corrupted or in an inconsistent state, preventing successful application.

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System Resource Exhaustion

Insufficient memory, disk space, or CPU resources on the server can hinder the log replay operation.

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Network Problems

Unstable or interrupted network connectivity between system components can disrupt delta log transfer and replay.

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Incorrect Configuration

Misconfigured parameters related to data replication, logging, or database settings can cause replay failures.

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Solutions

3 solutions available

1. Restart SAP System and Database easy

A simple restart can resolve transient issues affecting delta log replay.

1

Gracefully shut down the SAP S/4HANA system. This typically involves using the `stopsap` command or the SAP MC (Management Console).

2

Ensure all SAP application servers and the central instance are stopped.

3

Stop the SAP HANA database. Use the `HDB stop` command or the SAP HANA Cockpit.

4

Wait for a few minutes to allow all processes to terminate cleanly.

5

Start the SAP HANA database.

6

Start the SAP S/4HANA system.

7

Monitor the SAP system logs (SM21) and HANA trace files for any recurring errors.

2. Investigate and Resolve Delta Log Corruption advanced

Identify and repair corrupted entries within the delta log.

1

Access the SAP HANA database using SAP HANA Studio or SAP HANA Cockpit.

2

Check the SAP HANA alert log for specific details about the delta log replay failure. Look for messages indicating which specific transaction or log entry caused the issue.

3

Use the `hdbcons` utility to inspect the delta log. Be extremely cautious as incorrect usage can lead to data loss.

hdbcons
> delta_log info <partition_id>
> delta_log dump <partition_id> <start_lsn> <end_lsn>

4

If specific corrupted entries are identified, you may need to consult SAP Support for advanced tools or procedures to bypass or repair them. This often involves a more complex recovery process.

5

If the corruption is severe and cannot be resolved with standard procedures, a full database recovery from a recent backup might be necessary. Ensure you have a verified, recent backup.

3. Verify and Reconfigure Delta Log Settings medium

Ensure delta log configuration parameters are optimal and correctly set.

1

Access the SAP HANA database configuration parameters via SAP HANA Cockpit or by querying the `M_CONFIGURATION` system view.

SELECT KEY, VALUE, LEVEL FROM M_CONFIGURATION WHERE KEY LIKE 'delta_log%';

2

Review parameters such as `delta_log_backup_max_size` and `delta_log_backup_interval`. Ensure they are set to appropriate values based on your system's workload and backup strategy.

3

Check the disk space allocated for delta log backups. Insufficient space can lead to replay failures.

4

If any parameters seem misconfigured, adjust them cautiously. It's recommended to do this during a maintenance window and with SAP Support guidance.

5

After adjusting parameters, restart the SAP HANA database for changes to take effect.

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Related Errors

5 related errors

SAP S/4HANA Error 2054: Delta Log Replay Failure